Tomcat + datasource + hiberna ! problemas em JNDI

...
12:49:26,622 DEBUG NamingHelper:58 - lookup: java:hibernate
12:49:26,622  INFO NamingHelper:68 - Creating subcontext: java:hibernate
12:49:26,638  WARN SessionFactoryObjectFactory:98 - Could not bind factory to JNDI
javax.naming.NamingException: Context is read only
	at org.apache.naming.NamingContext.checkWritable(NamingContext.java:902)
	at org.apache.naming.NamingContext.createSubcontext(NamingContext.java:516)
	at org.apache.naming.NamingContext.createSubcontext(NamingContext.java:537)
	at org.apache.naming.SelectorContext.createSubcontext(SelectorContext.java:421)
	at javax.naming.InitialContext.createSubcontext(InitialContext.java:464)
	at org.hibernate.util.NamingHelper.bind(NamingHelper.java:69)
...

<?xml version="1.0" encoding="UTF-8"?>
<Context
	path="/frotaway"
	docBase="D:/projetos/eclipse3.2.1/frotaway/web"
	debug="1"
	reloadable="true">
	
	<Resource 
    	name="jdbc/frotaway" 
    	auth="Container"
    	type="javax.sql.DataSource"
    	maxActive="100" 
    	maxIdle="30" 
    	maxWait="10000" 
    	password="password" 
    	driverClassName="com.mysql.jdbc.Driver"
    	url="jdbc:mysql://201.83.22.184:3306/frotaway?autoReconnect=true" 
    	username="ususario"/>
</Context>

<hibernate-configuration>

    <session-factory name="java:hibernate/SessionFactory">
		<!-- Conexao com o banco de dados -->
        <property name="connection.datasource">java:/comp/env/jdbc/frotaway</property>
        <property name="dialect">org.hibernate.dialect.MySQLInnoDBDialect</property>
        <property name="show_sql">true</property>
        
        <mapping resource="br/com/peopleway/model/persistence/to/Person.hbm.xml"/>
		
    </session-factory>

</hibernate-configuration>